Natalie Ironside’s 2020 The Last Girl Scout is a standalone post-apocalypse adventure.
After the war, what was once the United States is a patchwork of pocket nations interspersed with radioactive wastelands overrun by zombie hordes. In the middle of one such wasteland lies an enigmatic structure known as the Citadel. The Ashland Confederated Republic decides to seize it. Result? Two companies march into the wasteland. Two survivors straggle back.
Common sense would suggest that it would be wise to leave the Citadel alone. But when Ashland learns that another pocket nation is targeting the Citadel, it does what it should have done at first: send a scouting mission into the wasteland. Commissar Magnolia “Mags” Blackadder very reluctantly agrees to join the mission.